Papers       Li Wan Po A. Dose-response of minor analgesics in acute pain. Br J Clin Pharmacol 2007; 63:268-70.   Li Wan Po A. Personalised medicine: who is an Asian? Lancet 2007; 369:1770-1.   Li Wan Po A, Petersen B. How high should total pain-relief score be to obviate the need for analgesic remedication in acute pain? Estimation using signal detection theory and individual-patient meta-analysis. J Clin Pharm Ther 2006; 31:161-5.   Li Wan Po A, Girard T. Succinylcholine: still beautiful and mysterious after all these years. J Clin Pharm Ther 2005; 30:497-502   Li Wan Po A. Drug-drug interactions and adverse drug reactions: the bollards and flashing lights syndrome. J Clin Pharm Therap 2005; 30: 97-100 Li Wan Po A. Drug evaluation, drug development and pharmacogenetics: celebrating 30 years of progress. J Clin Pharm Therap 2005; 30: 1-4 Li Wan Po A, Kendall MJ. Optimizing digoxin dosage: the long winding road. Journal of Clinical Pharmacy and Therapeutics 2003; 28: 347-348 Ozolins M, Eady EA, Avery AJ, et al. Comparison of five antimicrobial regimens for treatment of mild to moderate inflammatory facial acne vulgaris in the community: randomised controlled trial. Lancet 2004;364(9452):2188-95.   de Oliveira IR, Santos-Jesus R, Li Wan Po A, Poolsup N. Extracting numerical data from published reports of pharmacokinetic investigations: method description and validation. Fundamental and Clinical Pharmacology 2003; 17: 471-472   Li Wan Po A. Digoxin-drug interactions: Study design and generalisability. Journal of Clinical Pharmacy and Therapeutics 2002; 27: 1-4   Zhang WY, Li Wan Po A, Dua HS, Azuara-Blanco A. Meta-analysis of randomised controlled trials comparing latanoprost with timolol in the treatment of patients with open-angle glaucoma or ocular hypertension. Br J Opthalmol 2001;85:983-990.   Li Wan Po A, Zhang WY.  The pharmacology of pain and analgesia.  In:Allan MacLean, William Stones and Steven Thornton, editors.   Pain in Obstetrics and Gynaecology.  London: RCOG Press, 2001:47-58.   Thomas KS, Armstrong A, Avery A, Li Wan Po A, O’Neill C, Young S, Williams HC. Randomised controlled trial of short bursts of a potent topical corticosteroid versus prolonged use of a mild preparation for children with mild to mederate atopic eczema. BMJ 2002; 324: 1-7   Li Wan Po A, Kendall M.  Causality assessment of adverse effects - When is re-challenge ethically acceptable?  Drug Safety 2001;24:793-799.   Li Wan Po A.  Too much. too little, or none at all: dealing with substandard and fake drugs.  Lancet 2001;357:1904.   Li Wan Po, Zhang WY.  Efficacy of minor analgesics in primary dysmenorrhoea: a systematic review.  In: Shaughn OBrien, Iain Cameron and Allan Maclean, editors.   Disorders of the Menstrual Cycle.  London: RCOG Press, 2000:260-274.   Ashcroft DM, Li Wan Po A, Williams HC, Griffiths EM. Cost-effectiveness analysis of topical calcipotriol versus short-term contact dithranol. PharmacoEconomics 2000; 18: 469-476   Ashcroft DM, Li Wan Po A, Williams HC, Griffiths EM. Combination regimens of calcipotriene for chronic plaque psoriasis Archives of Dermatology 2000; 136: 1536-154   Bunn F, Lefebvre C, Li Wan Po A, Li L, Roberts I, Schierhout G. Human albumin solution for resuscitation and volume expansion in critically ill patients. The Albumin Reviewers. Cochrane Database Syst Rev 2000; (2):CD001208-   Garner SE, Eady EA, Popescu C, Newton J, Li Wan Po A. Minocycline for acne vulgaris: efficacy and safety. Cochrane Database Syst Rev 2000; (2):CD002086-.   Ashcroft DM, Li Wan Po A, Griffiths CE. Therapeutic strategies for psoriasis. J Clin Pharm Ther 2000; 25(1):1-10   Poolsup N, Li Wan Po A, de Oliveira IR. Systematic overview of lithium treatment in acute mania. J Clin Pharm Ther 2000; 25(2):139-56.   Poolsup N, Li Wan Po A, Knight TL. Pharmacogenetics and psychopharmacotherapy. J Clin Pharm Ther 2000; 25(3):197-220.   Ashcroft DM, Li Wan Po A, Williams HC, Griffiths CEM.  Systematic reviews of comparative efficacy and tolerability of calcipotriol in treating chronic plaque psoriasis.  BMJ 2000;320:963-7.   Li Wan Po A. Economic analyses of psoriasis treatment. IN Key Advances in the Effective Management of Psoriasis, Editors: Griffiths C, Barker J. Royal Society of Medicine 1999. RSM Press London   Poolsup N, Li Wan Po A, Oyebode F. Measuring mania and critical appraisal of rating scales. J Clin Pharm Ther 1999; 24(6):433-43   Li Wan Po A.  Interactions with over-the-counter medicines.   Prescribers' Journal 1999;39:248-54   Li Wan Po A. Antidepressants and upper gastrointestinal bleeding. BMJ 1999; 319: 1081-1082.   Ashcroft DM, Li Wan Po A.  Herbal remedies - issues in licensing and economic evaluation.  PharmacoEconomics 1999;16(4):321-8.   Li Wan Po A.  Communicating risk: third-generation contraceptives (Editorial).   Prescriber 1999;10:13.   Li Wan Po A, Kendall MJ.  Causality assesment of adverse drug effects: when is rechallenge ethically acceptable?  Lancet 1999;354:683.   Reeves DS, Finch RG, Bax RP, Davey PG, Li Wan Po A, Lingam G, Mann SG, Pringle MAL. Self-medication of antibacterials without prescription (also called 'Over-the-counter' use). J Antimicrobial Chemother 1999;44:163-77.   Ashcroft DM, Li Wan Po A, Williams HC, Griffiths CEM. Clinical measures of disease severity and outcome in psoriasis: a critical appraisal of their quality. Br J Dermatol 1999;141:185-91.   Li Wan Po. What is a first-line drug?. Prescriber 1998;9:13.   Pacey S. Warner J. Li Wan Po A. A multidisciplinary approach to hospital-based drug cost containment. Journal of Clinical Pharmacy & Therapeutics 1998;23(3):203-211.   Pacey S. Li Wan Po A. A review of methods of drug cost management in hospitals. Journal of Clinical Pharmacy & Therapeutics 1998;23(3):171-177   Li Wan Po A. Mega-mergers in the pharmaceutical industry: In whose interests? Pharmacoeconomics 1998;14(4):349-355   Li Wan Po A. Designing safe drugs with stereochemistry in mind. Adverse Drug Reactions & Toxicological Reviews 1998;17(2-3):60-62   Roberts I. Li Wan Po A. Chalmers L. Intellectual property, drug licensing, freedom of information, and public health. Lancet 1998;352(9129):726-729   Liu C. Li Wan Po A. Blumhardt LD. 'Summary measure' statistic for assessing the outcome of treatment trials in relapsing-remitting multiple sclerosis. Journal of Neurology, Neurosurgery & Psychiatry 1998;64(6):726-729.   Li Wan Po A. Zhang WY. Analgesic efficacy of ibuprofen alone and in combination with codeine or caffeine in post-surgical pain: A meta-analysis. European Journal of Clinical Pharmacology 1998;53(5):303-311.   Zhang WY. Li Wan Po A. Efficacy of minor analgesics in primary dysmenorrhoea: A systematic review. British Journal of Obstetrics & Gynaecology 1998;105(7):780-789   Li Wan Po A. Zhang WY. What lessons can be learnt from withdrawal of mibefradil from the market? Lancet 1998;351(9119):1829-1830   Li Wan Po A. Meta-analysis under the looking glass: Post-menopausal hormone replacement therapy. Journal of Clinical Pharmacy & Therapeutics 1997;22(5-6):305-307   Zhang WY. Li Wan Po A. Do codeine and caffeine enhance the analgesic effect of aspirin? - A systematic overview. Journal of Clinical Pharmacy & Therapeutics 1997; 22(2):79-97.   Li Wan Po A. Zhang WY. Systematic overview of co-proxamol to assess analgesic effects of addition of dextropropoxyphene to paracetamol. British Medical Journal 1997;315(7122):1565-1571   Li Wan Po A. A practical guide to undertaking a systematic overview. Pharmaceutical Journal 1997;258(6938):518-520   Cheah SY. Clark C. Goldberg L. Li Wan Po A. Phillips R. Outcome measures, pooled index and quality of life instruments in rheumatoid arthritis. Journal of Clinical Pharmacy & Therapeutics 1996;21(5):297-316.   Yoshioka S. Aso Y. Kojima S. Li Wan Po A. Power of analysis of variance for assessing batch-variation of stability data of pharmaceuticals. Chemical & Pharmaceutical Bulletin 1996;44(10):1948-1950.   Li Wan Po A. Stones RW. Pittrof R. Campbell S. Lees C. Thompson C. Pickles A. Martin J. Transdermal glyceryl trinitrate for dysmenorrhoea [6]. British Medical Journal 1996;313(7053):364.   Su XY. Li Wan Po A. Combining event rates from clinical trials: Comparison of Bayesian and classical methods. Annals of Pharmacotherapy 1996;30(5):460-465   Li Wan Po A. Drug decomposition leads to clinical problems. Drug Stability 1996;1(2):71-72.   Zhang WY. Li Wan Po A. Analgesic efficacy of paracetamol and its combination with codeine and caffeine in surgical pain - A meta-analysis. Journal of Clinical Pharmacy & Therapeutics 1996;21(4):261-282   Li Wan Po A. Su XY. Finch R. Reeves D. Bradley C. Kenkre J. Tobias R. Dassu D. Riaz A. Sanz F. Loza MI. Ahlgrimm ED. Baetens P. Sosa-Iudicissa M. Pal B. Over the counter drugs: Both doctors and pharmacists should prescribe better. British Medical Journal 1996;313(7049):115-116   Farquhar CM. Barlow D. Bernstein S. Bonnar J. Cameron I. Cooke I. Coope J. Coulter A. Holl H. Duncan S. Harlow S. Holton W. Kennedy S. Li Wan Po A. Lumsden M. O'Brien P. Parkin D. Prentice A. Rees M. et al. The need for systematic reviews in the treatment of menstrual disorders - Another Cochrane collaborative review group is born. British Journal of Obstetrics & Gynaecology 1996;103(6):497-500   Al-Obaidy SS. McKiernan PJ. Li Wan Po A. Glasgow JFT. Collier PS. Metabolism of paracetamol in children with chronic liver disease. European Journal of Clinical Pharmacology 1996;50(1-2):69-76.   Budeiri D. Li Wan Po A. Dornan JC. Is evening primrose oil of value in the treatment of premenstrual syndrome? Controlled Clinical Trials 1996;17(1):60-68   Su XY. Mattern C. Hacker R. Li Wan Po A. Does sea-water made isotonic affect ciliary beat frequency? International Journal of Pharmaceutics 1995;123(1):47-51   Johnston B. Scott N. Li Wan Po A. Jack DB. Psychometric profiling of the elderly using the Cambridge Cognitive Examination. Annals of Pharmacotherapy 1995;29(10):982-987.   Al-Obaidy SS. Li Wan Po A. McKiernan PJ. Glasgow JFT. Assay of paracetamol and its metabolites in urine, plasma and saliva of children with chronic liver disease. Journal of Pharmaceutical & Biomedical Analysis 1995;13(8):1033-1039   Li Wan Po A. Pegg J. Bridges S. The placebo response: Friend or foe? Journal of Clinical Pharmacy & Therapeutics 1995;20(2):47-48.   Bradley B. McCusker E. Scott E. Li Wan Po A. Patient information leaflets on over-the-counter (OTC) medicines: The manufacturer's perspective. Journal of Clinical Pharmacy & Therapeutics 1995;20(1):37-40   Alsuwaidan S. Li Wan Po A. Morrison G. Redmond A. Dodge JA. McElnay J. Stewart E. Stanford CF. Effect of exercise on the nasal transmucosal potential difference in patients with cystic fibrosis and normal subjects. Thorax 1994;49(12):1249-1250.   McCallion R. Li Wan Po A. In vivo evaluation of the effects of moisturisers on transepidermal water loss using factorial designs. International Journal of Pharmaceutics 1995;113(2):247-255   Zhang WY. Li Wan Po A. The effectiveness of topically applied capsaicin. A meta-analysis. European Journal of Clinical Pharmacology 1994;46(6):517-522.   Budeiri DJ. Li Wan Po A. Dornan JC. Clinical trials of treatments of premenstrual syndrome: Entry criteria and scales for measuring treatment outcomes. British Journal of Obstetrics & Gynaecology 1994;101(8):689-695.   Bradley B. Singleton M. Li Wan Po A. Readability of patient information leaflets on over-the-counter (OTC) medicines. Journal of Clinical Pharmacy & Therapeutics 1994;19(1):7-15.   McFarland MM. Scott EM. Li Wan Po A. Time-survival studies for quantifying effects of azlocillin and tobramycin on Pseudomonas aeruginosa. Antimicrobial Agents & Chemotherapy 1994;38(6):1271-1276.   Jian L. Li Wan Po A. Effect of angiotensin-converting enzyme (ACE) inhibitors on ciliary activity. International Journal of Pharmaceutics 1994;107(1):77-81.   McCallion R. Li Wan Po A. Modelling transepidermal water loss under steady-state and non-steady-state relative humidities. International Journal of Pharmaceutics 1994;105(2):103-112   Su XY. Li Wan Po A. Surface-response study of the effect of pH and tonicity on ciliary activity. S.T.P. Pharma Sciences 1994;4(1):82-85   Chan SY. Li Wan Po A. Quantitative evaluation of drug-induced erythema by using a tristimulus colour analyzer: Experimental design and data analysis.Skin Pharmacology 1993;6(4):298-312.   Su X-Y. Li Wan Po A. Millership JS. Ciliotoxicity of intranasal formulations: Menthol enantiomers. Chirality 1993;5(2):58-60   Jian L. Li Wan Po A. Kinetic evaluation of the ciliotoxicity of methyl- and propyl-p-hydroxybenzoates using factorial experiments. Journal of Pharmacy & Pharmacology 1993;45(2):98-101   Chan SY. Li Wan Po A. Quantitative skin blanching assay of corticosteroid creams using tristimulus colour analysis. Journal of Pharmacy & Pharmacology 1992;44(5):371-378.   Wu YL, Scott EM, Li Wan Po A, Tariq VN.  Ability of azlocillin and tobramycin in combination to delay or prevent resistance development in Pseudomonas aeruginosa.  J Antimicrobial Chemotherapy 1999;44:389-392.   Wu YL, Scott EM, Li Wan Po A, Traiq VN.  Development of resistance and cross-resistance in Pseudomonas aeruginosa exposed to subinhibitory antibiotic concentrations.  APMIS 1999;107:585-592.   Gilliland D. Li Wan Po A. Scott E. Kinetic evaluation of claimed synergistic paraben combinations using a factorial design. Journal of Applied Bacteriology 1992;72(3):258-261.   Gilliland D. Li Wan Po A. Scott E. The bactericidal activity of a methyl and propyl parabens combination: Isothermal and non-isothermal studies. Journal of Applied Bacteriology 1992;72(3):252-257.   Carstensen JT and Li Wan Po A. The state of water in drug decomposition in the moist solid state: description and modelling. International Journal of Pharmaceutics 1992; 83: 87-94.   Brown ME, Galwey A and Li Wan Po A. Reliability of kinetic measurements for the thermal dehydration of lithium sulphate monohydrate. Part 1. Isothermal measurements of pressure of evolved water vapour. Thermochimica Acta 1992; 203: 221-240.   Wong LP, Gilligan CA and Li Wan Po A. Preparation and characterisation of sustained-release ibuprofen-cetostearyl alcohol spheres. International Journal of Pharmaceutics 1992; 83: 95-114   Jian L and Li Wan Po A. Effect of xy1ometazoline and antazoline on ciliary beat frequency. International Journal of Pharmaceutics 1992; 86: 59-67.   Delargy P and Li Wan Po A. Are terfenadine and astemizole non-sedative antihistamine compounds? A meta-analysis. Pharmacoepidemiology and Drug Safety 1 (1992) 299-   Mahmud A and Li Wan Po A. Investigation of The Effect of Additives on the Dissolution Rates of Aspirin and Paracetamol Using a Factorial Design. Drug Development and Industrial Phannacy 1991; 17: 709-724.   Zhou XH and Li Wan Po A. Effects of cho1ic acid and other enhancers on the bioavailability of insulin from a subcutaneous site. International Journal of Pharmaceutics 1991; 69: 29-41.   Zhou XH and Li Wan Po A. Comparison of enzyme activities of tissues lining portals of absorption of drugs: Species differences. International Journal of Pharmaceutics 1991; 70: 271-283.   Gilligan CA and Li Wan Po A. Factors affecting drug release from a pellet system coated with an aqueous colloidal dispersion. International Journal of Pharmaceutics 1991; 73: 51-68.   Gilligan CA and Li Wan Po A. Oral enteric vaccines: design and delivery. International Journal of Pharmaceutics 1991; 75: 1-24   Gilligan CA and Li Wan Po A. Oral enteric vaccines: clinical trials. Journal of Clinical Pharmacy and Therapeutics 1991; 16: 309-335.   Zhou XH and Li Wan Po A. Peptide and protein drugs: I. Therapeutic applications, absorption and parenteral administration. International Journal of Pharmaceutics 1991; 75: 97-115.   Zhou XH and Li Wan Po A. Peptide and protein drugs: ll. Non-parenteral routes of delivery. International Journal of Pharmaceutics 1991; 75: 117-130.   Li Wan Po A, Wong LP and Gilligan CA. Characterisation of commercially available theophylline sustained- or controlled-release systems: in vitro drug release prortles. International Journal of Pharmaceutics 1990; 66: 111-130   Mhando JR and A. Li Wan Po A. Two-stage release of benzocaine from sunflower oil/gelatin emulsion films. International Journal of Pharmaceutics 1990; 59: 165-170.   Mhando JR and Li Wan Po A. Controlled release of local anaesthetic agents from liquid-solid emulsion gels. International Journal of Pharmaceutics 1990; 62: 249-258.   Zhou XH and Li Wan Po A. Comparison of enzymic activities of tissues lining portals of drug aborption, using the rat as a model. International Journal of Pharmaceutics 1990; 62: 259-267.   Irwin WJ, Sanderson FD and Li Wan Po A. Percutaneous absorption of ibuprofen: Vehicle effects on transport through rat skin. International Journal of Pharmaceutics 1990; 66: 193-200   Irwin WJ, Sanderson FD and Li Wan Po A. Percutaneous absorption of ibuprofen and naproxen: Effect of amide enhancers on transport through rat skin. International Journal of Pharmaceutics 1990; 66: 243-252.   Hutchison KG, Li Wan Po A and Allison RA. The use of oscillatory rheological techniques to quantify the flow behaviour of polyelectrolyte systems. Pharmaceutical Technology Drug Stability, Ellis Horwood Ltd (1989) Editor: M.H. Rubinstein.   Li Wan Po A, Gilligan CA and Wong LP. Sustained-release theophylline products. The Pharmacy And Pharmacotherapy Of Asthma, Ellis Horwood Ltd (1989) Editor: M.H. Rubinstein.   Chan SY and Li Wan Po A. Prodrugs for dermal delivery. International Journal of Pharmaceutics 1989; 55: 1-16.   Kohli R, Archer WI and Li Wan Po A. Laser velocimetry for the non-invasive assessment of the percutaneous absorption of nicotinates. International Journal of Pharmaceutics 1987; 36: 91-98.   Hashim H and Li Wan Po A. Improving the release characteristics of water-soluble drugs from hydrophilic sustained release matrices by in situ gas generation. International Journal of Pharmaceutics 1987; 35: 201-209   Liak TL, Li Wan Po A, Irwin WJ. The effects of drug therapy on urinary pH - excipient effects and bioactivation of methenamine. International Journal of Pharmaceutics 1987; 36: 233-242   Li Wan Po A. Application of Differential Scanning Calorimetry in Pharmacy: Prediction of Solid State Stability of Drugs. Analytical Proceedings 1986; 23: 391-393.   Irwin WJ, Masuda QN, Li Wan Po, A, Andrews AH. Transesterification: an analytical and formulation problem. Journal of Pharmaceutical and Biomedical Analysis 1985; 3: 241-250.   Cheung YW, Li Wan Po A and Irwin WJ. Cutaneous biotransformation as a parameter in the modulation of the activity of topical corticosteroids. International Journal of Pharmaceutics 1985; 26: 175-189.   Cheung YW, Li Wan Po A and Irwin WJ. Resistance to enzymic hydrolysis as a parameter in drug potency. International Journal of Pharmaceutics 1985; 27: 325-333.   Kohli R, Archer WI, Roberts JMC, Cochran AJ and Li Wan Po A. Impedance measurements for the non invasive monitoring of skin hydration: a reassessment. International Journal of Pharmaceutics 1985; 26: 275-287.   Hempenstal JM, Irwin WJ, Li Wan Po A and Andrews AH. Antibiotic granules for reconstitution as syrups: product uniformity and stability dependent upon reconstitution procedure. International Journal of Pharmaceutics 1985; 23: 131-146   Li Wan Po A and Mroso PV. Drug-drug incompatibility in the solid state: kinetic interpretation, modelling and prediction. International Journal of Pharmaceutics 1984; 18: 287-298.   Li Wan Po A and Mhando JM. Formulations of sustained-release products: dissolution and diffusion-controlled release from gelatin films. International Journal of Pharmaceutics 1984; 20: 87-98.   Irwin WJ, Hempenstall JM, Li Wan Po A and Andrews AH. Controlled-release penicillin complexes: dissolution and sta'bility of benzathine cloxacillin. International Journal of Pharmaceutics 1984; 20: 25-41.   Irwin WJ, Li Wan Po A, Stephens JS. Noxythiolin: High performance liquid chromatographic assay and stability. Journal of Clinical and Hospital Pharmacy 1984; 9: 41-51.   Irwin WJ, Masuda N, Li Wan Po A. Transesterification kinetics of phenyl salicylate. Tetrahedron 1984; 40: 5217-5223.   Irwin WJ, Hempenstall JM, A. Li Wan Po A and Andrews AH. Controlled-release penicillin complexes High Performance Liquid Chromatography and Assay. Journal of Chromatography. 1984; 287: 85-96.   Li Wan Po A. Mechanical damage in reversed-phase HPLC columns. Laboratory Practioner 1984; 33: 74-77.   Irwin WJ, Masuda QN and Li Wan Po A. Transesterification of salicylate esters used as topical analgesics. International Journal of Pharmaceutics 1984; 21: 35-50.   Li Wan Po A, Mroso PV and Irwin WJ. Modelling decomposition in the solid state: stability of salsalate in suspension in the presence of excipi~nts. International Journal of Pharmaceutics 1983; 16: 115-123.   Li Wan Po A, Elias NA and Irwin WJ. Non isothennal and non-isopH kinetics in formulation studies. Acta Pharmaceutica Suecica 1983; 20: 277-286.   Yip YW, Li Wan Po A and Irwin WJ. Kinetics of decomposition and formulation of hydrocortisone butyrate in semi-aqueous and gel systems. Journal of Phannaceutical Sciences 72 (1983) 776-781   Hempenstall JM, Irwin WJ, Li Wan Po A and Andrews AH. Non-isothermal kinetics using a microcomputer: a derivative approach to the prediction of the stability of Penicillin formulations. Journal of Pharmaceutical Sciences 1983; 72: 668-673.   Mroso PV, Li Wan Po A and Irwin WJ. Solid state stability of aspirin in the presence of excipients: kinetic interpretation, modelling and prediction. Journal of Pharmaceutical Sciences 71 (1982) 1096-1101.   Yip YW, Irwin WJ and Li Wan Po A. High performance liquid chromatographic separating of topical steroids: Application to kinetic studies. Proceedings of the Symposium on the Analysis of Steroids, Eger, Hungary (1981) 381-388.   Li Wan Po A and Irwin WJ. The determination of pKa and partition data: an automated approach. Laboratory Practice January 1980; 21-25.   Li Wan Po A and Irwin WJ. High performance liquid chromatography: techniques and applications. Journal of Clinical Pharmacy 1980; 5: 107-104   Irwin WJ, Li Wan Po A and Wadhwani RR. A gas chromatographic assay of chloramphenicol: application to formulations and to samples showing hydrolytic or photochemical degradation. Journal of Clinical Pharmacy 1980; 5: 55-66   Williams KJ, Li Wan Po A and Irwin WJ. Sample-solvent induced peak broadening in the reversed phase high performance liquid chromatography of aspirin and related analgesics. Journal of Chromatography 1980; 194: 217-223.   Li Wan Po A and W.J. Irwin. Sulphonamides by high perfonnance thin layer chromatography. Journal of High Resolution Chromatography 1979; 2: 623-627.   Irwin WJ and Li Wan Po A. The dependence of amitriptyline partition coefficients on lipid phase. International Journal of Pharmaceutics 1979; 4: 47-56   Yip YW and Li Wan Po A. The stability of betamethasone-17-valerate in semi-solid bases. Journal of Pharmacy and Pharmacology 1979; 31: 400-402.   Enever RP, Li Wan Po A and Shotton E. Flupenthixol dihydrochloride decomposition in aqueous solution. Journal of Pharmaceutical Sciences 1979; 68: 169-171.   Li Wan Po A, Irwin WJ and Yip YW. High performance liquid chromatographic assay of betamethasone-17-valerate and its degradation products. Journal of Chromatography 1979; 176: 399-405   Enever, Li Wan Po A and Shotton E. Factors influencing decomposition rate of amitriptyline hydrochloride in aqueous solution. Journal of Pharmaceutical Sciences 1977; 66: 1087-1089.   Li Wan Po Morland I and Robins L. Chemical cross-contamination in the pharmacy. Journal of Clinical Pharmacy 2 (1978) 131-135.   Li Wan Po A and W.J. Irwin WJ. A high performance liquid chromatographic assay of cis- transisomers of tricyclic neuroleptic drugs. Journal of Pharmacy and Pharmacology 1978; 31: 512-516.   Irwin WJ, Li Wan Po A and Scott DK. The stability of compound tablets containing aspirin and phenacetin: the effect of legislation. Journal of Clinical Pharmacy 1975; 4: 25-32.   Enever RP, Li Wan Po A, Millard BJ and Shotton E. Decomposition of amitriptyline hydrochloride in aqueous solution: identification of decomposition product. Journal of Pharmaceutical Sciences 1975; 64: 1497-1499.